Technical Elmering and Mentoring Net – Thursday April 9, 2015

Last Thursday night’s net (4/9/15) was another successful one with 12 check-ins plus net control (K6HWN). The net began with John (A6GLJ) reminding everyone listening that Jerry’s (KK6FNP) single loop fractional wave antenna is for sale. Jerry is upgrading to a double loop fractional wave antenna and the single loop is making a trip to Arizona where the inventor of the technology will go over it and certify its well-being. The asking price is $2,000.00 USD and you can contact Jerry at (805) 896-4484 (no blocked numbers please) or The antenna is described in greater detail in a swap net listing here at the Swap Net Listings.

Paul (KF6CIH) had listened to part of an ATV Special Modes net and had a question about how one can send computer data over the radio. Brian (K6BPM) was present on-air and being the net control for the Special Modes net happily went over some concepts with Paul and invited him to join the net if he’d like to learn more and participate. The net airs every Tuesday night at 8:00 PM to 9:30 PM on 146.79 linked to 224.08 and everyone is welcome to check-in.

Next Brian (K6BPM) asked a question that he and I (K6FLD) were curious about. I’d mentioned to Brian that when using my MFJ-969 antenna tuner that I thought I noticed enhanced signal reception when the antenna was tuned properly on a band. Brian and I (before I had ever used an antenna tuner) had thought that receiving wasn’t affected by tuning the antenna, only the SWR and transmit quality. Shackmaster Dave (k6HWN) explained that yes, indeed the receive will peak as well as the process is reciprocal in that what’s good for transmit is good for receive. Likewise, if you have loss on input you’ll also have loss on output. Signals will definitely peak on receive in fact you can tune it approximately by peaking it on receive noise and you’ll be close on transmit and SWR. Ken (KA6KEN) commented that it sounded like Brian had talked himself out of the idea that an electrical adjustment was being made during tuning when in fact you do, it’s just that you have passive components making a passive adjustment and you need not transmit for that to be beneficial.

Tune in to the SBARC Technical Mentoring and Elmering Net next Thursday at 0800 and see what interesting questions will arise or ask some of your own! All club members and visitors are encouraged to check in to the Technical Mentoring and Elmering net each week and join in with questions and /or answers to and contribute the knowledge of new and seasoned amateur radio operators alike.


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